Swivel chair



FIG. 1 is a front view of a swivel chair showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top perspective view thereof; and,

FIG. 6 is a bottom perspective view thereof. 

The ornamental design for a swivel chair, as shown. 